
Ultimatum
Serious Outcomes
An ultimatum often implies a severe consequence if demands are not met; it's not a casual warning.

The coach issued an ultimatum: attend practice diligently or be removed from the team.
Negotiation Breakdown
Ultimatums are normally used when negotiations stall and one party wants to force a decision.

After endless debate, the board gave an ultimatum to resolve the issue today or dissolve the partnership.
Final Attempt
Use 'ultimatum' to describe a last attempt to change a situation, before giving up or taking action.

The tenant's ultimatum to the landlord was clear: fix the heating or I'll move out.
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